Fastening device



01.22,1935. T, MANWLLE 2,017,912

FASTENING DEVICE Filed April 14, 1934 INVENTOR (AW/7117 Z MAW/ZZZ ATI'OR EY Patented Oct. 22, 1935 UNITED?" STATES ms'ra mm DEVICE Charles T. Manville, Woodbury, Conm, assignor, by mesne assignments, to United States Rubber Company, New York, N. Y., a corporation of New Jersey Application April 14, 1934, Serial No. 720,532 1 Claim. (01. 24-205) Myinvention relates to fastening devices, and more particularly to completely separable slide fastener units.

Completelyseparable slide fasteners comprise two stringers of flexible material, usually woven tape, to one edge of each of which a row of spaced fastener elements is attached@ A slider moves along the edges of the stringers to engage and disengage the fastener elements. At one end of each stringer the fastener elements are replaced by units permitting the connection and/ or complete separation of the stringers. One of the units is in the form of a socket or female member which receives a pin or male member carried by the other stringer.

As the channels in the slider through which the fastener elements on the opposing stringers move are divergent upwardly and outwardly of the slider it follows that when the pin or male member is passed through the slider for insertion in the socket orfemale member the pin normally approaches the fastener elements on the other stringer in angular or divergent relation. In order to insert the pin into the socket through the slider, a considerable distortion of the adjacentmaterial of the stringers has been necessary, and considerable muscular effort has been required to complete the connection. Sometimes adjacent fastening elements have been displaced.

I obviate the foregoing difficulty by providing an engaging surface between the slider and the socket which permits a tilting of the slider relative to the axis of the socket so that the pin may be, passed through the slider and into the socket in a direction approaching parallelism to the axis of the socket. Preferably, but not necessarily, the upper face of the socket is out at an angle to its axis. I

The accompanying drawing illustrates a present preferred embodiment of my invention, in which w Fig. l is an elevational view of a portion of a completely separable fastener unit embodying my invention;

Fig. 2 is a view, partially in elevation and partly in section, showing the relative positions of the slider and socket near the completion of the connecting movement;

Fig. 3 is a sectional view of the united elements taken substantially along the section line III-HI of Fig. 1; and I Fig. 4 is a perspective view of the co-operatlng pin and socket elements.

Referring to the drawing, :a pair of stringers I are provided along their opposing edges with cords 2 for securing fastener elements 4 of any convenient design, as is well understood in the art. A slider 5 having a pull tab 6 is provided for movement along the stringers to engage and .5 disengage the fastener elements 4.

In order to make the stringers I completely separable, one-of them at its lower edge is provided with a pin or male construction I which is insertable into a socket or female member 8 on 10 the otherstringen' Ininserting the pin 1 into the socket 8 it is necessary to pass it through opening 9 in the slider 5' in order that the slider may move along-the fastener elements 4 after the pin and socket are engaged. As the chanl5 nels formed between the side walls I0 and a connecting stud II of the slider'diverge outwardly, it follows that the pin 1 tends to enter at an angle to the axis of the slider. If the slider 5 is held in a rigid position against the socket so that its axis remains in parallelism with r the axis of the socket, a considerable amount of bending and/or distortion of the stringer material I will be necessary in order, to insert the .pin with a possible misplacement of the fastener elements I. This has been one of the defects in prior separable fasteners. By providing a sloping surface I2 on the socket 8, which extends upwardly and outwardly from the supporting stringer, for engaging the lower face I4 of the slider 5 it is possible to tilt the slider in order that the pin 1 may be passed through the slider and into the socket 8 without the difficulties here- .tofore experienced. In Fig. 2 the line H illustrates the position of the edge of the pinelement during. the inserting movement, while the line bb represents the axis of the slider 5. The angle a-b represents the amount of tilting 'of the slider permitted by the engaging surfaces I2 and I l. It is to be understood that theexact shape and location of the surface I2 may be varied Within the spirit of the invention, the sloping surface I2 herein illustrated being an illustrative embodiment of the invention and not a limitation thereof.

Referring to Figs. 3 and 4, the pin or male memher"! isformed from a strip of sheet metal which is bent upon itself to forina sleeve I5 around the cord 2 of the stringer and terminates in laterally extending portions I6 which are placed on opposite sides of the stringer I. A rivet II extends through alined openings I8 for holding the laterally extending portions I6 in place. If desired the portions. I6 may be pinched together as at I9 immediately behind thesleeve It in forder to' facilitate the e of the pin between the side walls ll oi the slider and intoaslot-IQ inthe socket i.

The socket 8 comprises a sleeve Ila and laterally extending portions it similar tothose oi the 5 pin 1 except that ears II are provided on the laterally extending portions it to form a seat and stop for the slider l i! the latter is tilted beyond the dotted line position shown in Fig. 2. The ears II also serve to hold the fabric between them and 10 the -sleeve Ila in a taut condition so that wrinkling or the fabric within the slider I. when the latter is in its lower position, is avoided. A clip 22 having prongs 24 is passed over the end of the sleeve "a and the prongs 2| are crimped into openings 15 I in the laterally extending portion I. It is.

' to be understood that the clip 22 may be otherwise iormed, i! desired. The-clip 22 has the slot II in alinement with the reduced portion it of the pin I. The upper end it of the clip I! is open 20 for the reception of the pin I thereby forming a socket or female member. The socket structure t is permanently attached'to one of the stringers while I have shown anddescribed the present preferred t or the'invention. it is to be imderstood that it may be otherwise embodied within the spirit thereoi and the scope of the ap- Dmdedclllm. 5

Having thus described my invention, what I claim and desire to protect by letters Patent is: In a separable fastener assembly. a pair or anchoring stringers having co-operating fastening elements disposed along their edges. a slider for 10 manipulating said elements. said elements on one of said stringers terminating in a metallic sleeve disposed about the edge of the stringer. a socket member carried by the other stringer tor receiving the sleeve with its upper edge serving as a 16- stop for said slider. the surface of engagement of saidslider and said socket member being inciined upwardly and outwardly from the supporting stringer to permit the slider to tilt relative to the socket member to iacilitate the insertion of 20 the sleeve.

CHARLES T. MANVILLE. 

